O*NET rates the "stress tolerance" for each job on a scale from zero to 100, where a lower rating signals less stress. (Note: We are not saying these jobs are "stress free" – they just tend to rate lower than other professions.)

To rate each job, O*NET looks at how frequently workers must accept criticism and deal effectively with high stress at work.

Here are 26 jobs that pay more than $70,000 a year, on average, and earned a stress tolerance rating of 70 or lower, in order from highest to lowest stress score.

Astronomer

What they do: Observe, research, and analyze astronomical phenomena to increase basic knowledge or apply such information to practical problems.

Education requirements:Ph.D. for most research jobs.

Economics teacher (postsecondary)

Flickr / University of Liverpool Faculty of Health & Life Sciences

Stress tolerance: 62

Average annual salary:Stress tolerance: 70

What they do: Teach courses in economics. Includes teachers primarily engaged in teaching and those who do a combination of teaching and research.

Education requirements: Typically need a Ph.D. to teach at the college level, but a master's degree may be enough.

Physicist

Dana Romanoff / Stringer / Getty Images

Stress tolerance: 61

Average annual salary:$118,500

What they do: Conduct research into physical phenomena, develop theories on the basis of observation and experiments, and devise methods to apply physical laws and theories.

Education requirements:Ph.D. for most research jobs.

Biomedical engineer

UC Davis College of Engineering/flickr

Stress tolerance: 61

Average annual salary:$91,230

What they do: Analyze and design solutions to problems in biology and medicine, with the goal of improving the quality and effectiveness of patient care.

Education requirements: Typically need a bachelor's degree in biomedical engineering from an accredited program. Alternatively, they can get a bachelor's in a different field of engineering and then either get a graduate degree in biomedical engineering or complete on-the-job training in biomedical engineering.

Political scientist

What they do: Study the origin, development, and operation of political systems.

Education requirements: Bachelor's degree, followed by master's or Ph.D. in political science, public administration, or a related field.

Agricultural engineer

Thomson Reuters

Stress tolerance: 61

Average annual salary:$78,490

What they do: Apply knowledge of engineering technology and biological science to agricultural problems concerned with power and machinery, electrification, structures, soil and water conservation, and processing of agricultural products.

Geographer

What they do: Study the nature and use of areas of Earth's surface, conduct research on physical aspects of a region, and conduct research on the spatial implications of human activities within a given area.

Education requirements: Master's degree for most positions; some entry-level jobs in the federal government require only a bachelor's.

Mathematician

What they do: Conduct research in fundamental mathematics or in application of mathematical techniques to science, management, and other fields; solve problems in various fields using mathematical methods.

Education requirements: Bachelor's or master's degree for those who want to work in government, and a doctorate may be required to work for private companies.